CONFIG_ARCH_SPARSEMEM_ENABLE is not available for the selected architecture x86.
Result is shown for architecture parisc or 64BIT
CONFIG_ARCH_SPARSEMEM_ENABLE (not configurable)
configname: CONFIG_ARCH_SPARSEMEM_ENABLE
Linux Kernel Configuration
└─>Processor type and features
└─>ARCH_SPARSEMEM_ENABLE